body {
  color: var(--color-text-primary);
  background: #f9fafb;
}
main:not(.home) { padding: 16px; }
.home { max-width: 960px; margin: 0 auto; padding: 24px 0; }
/* 窄边距容器 */
.container { width: 100%; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.container--narrow { max-width: min(1440px, 96vw); }
.container--wide { max-width: min(1720px, 98vw); }

/* 公共工具类：文本与列表 */
.text-muted { color: var(--color-text-secondary); }
.link-list { list-style: none; padding: 0; margin: 0; }
.link-list a { text-decoration: none; }